CrystalSpace

Public API Reference

csutil/sha256.h
00001 /*
00002     Crystal Space utility library: SHA256 class
00003     Original C code written by Jesse Kornblum (see related source)
00004     Adapted for Crystal Space by Stefano Angeleri <weltall2@gmail.com>
00005 
00006     This library is free software; you can redistribute it and/or
00007     modify it under the terms of the GNU Library General Public
00008     License as published by the Free Software Foundation; either
00009     version 2 of the License, or (at your option) any later version.
00010 
00011     This library is distributed in the hope that it will be useful,
00012     but WITHOUT ANY WARRANTY; without even the implied warranty of
00013     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014     Library General Public License for more details.
00015 
00016     You should have received a copy of the GNU Library General Public
00017     License along with this library; if not, write to the Free
00018     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00019 
00020 */
00021 
00022 #ifndef _CSSHA256_H
00023 #define _CSSHA256_H
00024 
00025 #include "csextern.h"
00026 #include "csutil/csstring.h"
00027 #include "csutil/digest.h"
00028 #include "csutil/hash.h"
00029 
00030 namespace CS
00031 {
00032 namespace Utility
00033 {
00034 namespace Checksum
00035 {
00044   class CS_CRYSTALSPACE_EXPORT SHA256
00045   {
00047 
00048     uint32 total[2];
00049     uint32 state[8];
00050     uint8 buffer[64];
00052     
00057     void Process (const uint8 data[64]);
00059     void AppendInternal (const uint8* input, uint32 length);
00064     void Finish (uint8 digest[32]);
00065   public:
00067     typedef CS::Utility::Checksum::Digest<32> Digest;
00068     
00069     SHA256 ();
00070     
00076     void Append (const uint8* input, size_t length);
00077     
00084     Digest Finish ();
00085 
00087     static Digest Encode(csString const&);
00089     static Digest Encode(const char*);
00091     static Digest Encode(const void*, size_t nbytes);
00092   };
00093    
00094 }//namespace Checksum
00095 }//namespace Utility
00096 }//namespace CS
00097 
00098 
00099 #endif // _CSSHA256_H

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